64309950 has 144 divisors (see below), whose sum is σ = 184154880. Its totient is φ = 16679520.

The previous prime is 64309939. The next prime is 64309951. The reversal of 64309950 is 5990346.

64309950 is a `hidden beast` number, since 643 + 0 + 9 + 9 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64309951) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 814011 + ... + 814089.

Almost surely, 2^64309950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64309950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92077440).

64309950 is an abundant number, since it is smaller than the sum of its proper divisors (119844930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64309950 is a wasteful number, since it uses less digits than its factorization.

64309950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 64309950 is about 8019.3484772767. The cubic root of 64309950 is about 400.6446895469.

The spelling of 64309950 in words is "sixty-four million, three hundred nine thousand, nine hundred fifty".